WO2024034963A1

WO2024034963A1 - Base station device, terminal, and resource control method

Info

Publication number: WO2024034963A1
Application number: PCT/KR2023/011201
Authority: WO
Inventors: 조상훈; 최치영
Original assignee: 에스케이텔레콤 주식회사
Priority date: 2022-08-11
Filing date: 2023-08-01
Publication date: 2024-02-15
Also published as: KR20240022130A

Abstract

The present invention relates to a scheme to extend cell coverage by using subband non-overlapping full duplex (SBFD) technology in a dynamic time division duplexing environment.

Description

Base station device, terminal, and resource control method

The present invention relates to a method of expanding cell coverage by applying Subband non-overlapping Full Duplex (SBFD) technology.

This application claims priority from Korean Application No. 10-2022-0100426, filed on August 11, 2022, and the entire contents of this application are incorporated herein by reference for all purposes.

In the 5G communication system environment, which has evolved from the LTE communication system, numerous devices are connected and various types of data traffic occur.

Accordingly, data traffic, which was previously concentrated in the downlink, may appear in various uplink and downlink data rates depending on time.

In relation to this, Dynamic Time Division Duplexing technology, one of the core technologies of the 5G communication system, is also being discussed.

Here, as described above, dynamic time division duplex communication technology dynamically distributes time resources according to the ratio of uplink and downlink data, unlike the existing duplex communication technology where resources are fixed in an environment where uplink and downlink data rates vary. This is an allocation method.

Meanwhile, in this regard, the 5G communication system uses the frequency bands of FR1 (Frequency Range 1), which includes the sub-6 GHz frequency band, and FR2 (Frequency Range 2), which includes the mmWave band (24-71 GHz) frequency band. Accordingly, high-speed data transmission is possible and latency can also be shortened.

However, despite these advantages in the 5G communication system, cell coverage may be reduced due to the use of high frequency bands.

Accordingly, there is also a limitation in that a large number of expensive equipment is required to maintain or expand coverage.

The present invention was created in consideration of the above-mentioned circumstances, and the object to be achieved by the present invention is to provide cell coverage by utilizing SBFD (Subband non-overlapping Full Duplex) technology in a Dynamic Time Division Duplexing environment. It's about expanding.

In order to achieve the above object, the base station device according to an embodiment of the present invention has a memory containing a command and executes the command, thereby generating a TA (Timing Advance) value measured from the random access preamble of the terminal. Characterized by comprising a processor that determines the communication type based on the distance to the terminal and determines resources within a slot format that allows simultaneous allocation of uplink resources and downlink resources between frequency subbands according to the communication type. do.

Specifically, the random access preamble is received through a specific RO (RACH Occasion) of the Random Access Channel (RACH), and the specific RO is 2 allocated to consecutive sections within a slot according to the format of the random access preamble. Configuration using the above uplink resources may be possible.

Specifically, the processor may determine whether the communication type is a long-distance communication type from the result of comparing the TA value with a predefined threshold (Timing Advance Thresh).

Specifically, when the long-distance communication type is determined by the communication type, the processor may determine the slot format to include two or more uplink resources allocated to consecutive sections within the slot.

Specifically, the terminal periodically determines whether an E1 event (Event E1) related to a change in distance from the base station device is entered based on the TA value confirmed from the base station device according to a random access procedure for initial connection. And, upon entry of the E1 event, the random access preamble can be transmitted to the base station device.

Specifically, the terminal can determine the entry of the E1 event when the result of adding or subtracting the hysteresis parameter to the TA value is outside the range of the threshold defined based on the TA value. there is.

A terminal according to an embodiment of the present invention for achieving the above object includes: a memory including instructions; And by executing the command, a random access preamble is transmitted to the base station device according to a random access procedure for initial access, and the base station based on the TA (Timing Advance) value measured from the random access preamble. If the base station device determines resources within a slot format that can simultaneously allocate uplink resources and downlink resources between frequency subbands according to the communication type according to the distance to the device, based on the TA value, the base station device It is characterized by including a processor that periodically determines whether an E1 event (Event E1) related to a change in distance is entered, and transmits the random access preamble to the base station device when determining the entry of the E1 event.

A resource control method performed in a base station device according to an embodiment of the present invention to achieve the above object is a method of controlling resources between the terminal and the terminal based on the TA (Timing Advance) value measured from the random access preamble of the terminal. A determination step of determining the communication type according to the distance; And a decision step of determining resources within a slot format that can simultaneously allocate uplink resources and downlink resources between frequency subbands according to the communication type.

Specifically, the determination step may determine whether the communication type is a long-distance communication type from the result of comparing the TA value with a predefined threshold (Timing Advance Thresh).

Specifically, in the determination step, when the long-distance communication type is determined by the communication type, the slot format may be determined to include two or more uplink resources allocated to consecutive sections within the slot.

According to the base station device and resource control method of the present invention, SBFD (Subband non-overlapping Full Duplex) technology is utilized in a dynamic time division duplexing environment to control the terminal according to the distance from the terminal 200 within cell coverage. Since the resource pattern (TDD pattern) of (200) can be determined differently, cell coverage can be expanded by efficiently compensating for the time delay that occurs during long-distance communication.

Figure 1 is an example diagram for explaining a slot format in SBFD (Subband non-overlapping Full Duplex) technology.

Figure 2 is an exemplary diagram illustrating a dynamic time division duplex communication environment according to an embodiment of the present invention.

Figure 3 is a configuration diagram for explaining the schematic configuration of a base station device according to an embodiment of the present invention.

Figure 4 is an example diagram for explaining RO (RACH Occasion) settings according to an embodiment of the present invention.

Figure 5 is an example diagram for explaining a slot format according to an embodiment of the present invention.

Figure 6 is a configuration diagram for explaining the schematic configuration of a terminal according to an embodiment of the present invention.

7 is a flowchart illustrating a resource control method according to an embodiment of the present invention.

Hereinafter, various embodiments of the present invention will be described with reference to the attached drawings.

The present invention deals with SBFD (Subband non-overlapping Full Duplex) technology.

As the types of communication services and transmission requirements in the LTE communication system become more diverse, the expansion of LTE frequencies and the evolution to 5G communication systems are actively progressing.

The 5G communication system accommodates the maximum number of terminals based on limited wireless resources, and provides eMBB (enhanced mobile broadband)/mMTC (massive machine type communications)/uRLLC (ultra-reliable and It supports scenarios of low latency communications (highly reliable and low latency communications).

Meanwhile, in this 5G communication system environment, numerous devices are connected and various types of data traffic occur.

In this regard, Dynamic Time Division Duplexing technology is also being discussed as one of the core technologies of the 5G communication system.

In particular, the cell coverage reduction phenomenon that occurs in urban areas and general areas can be improved through various methods, but in the case of maritime coverage, it is virtually difficult to improve the phenomenon due to geographical characteristics that inevitably limit equipment input. .

Looking at this more specifically, maritime coverage must serve a maritime area of 100 km, but the slot format used in 3.5 GHz, the main band of FR1, cannot accommodate 100 km of coverage.

To solve this, a slot of at least 3ms must be secured to compensate for the time delay that occurs during long-distance communication.

Relatedly, when using subcarrier spacing (SCS) 30kHz, uplink (UL) resources must be allocated six times in a row to secure a slot of at least 3ms.

However, in this case, securing downlink (DL) resources becomes relatively difficult, so compensating for time delay through this is difficult.

Accordingly, in one embodiment of the present invention, we would like to propose a new method that can effectively compensate for the time delay that occurs during long-distance communication in the 5G communication system.

In this regard, Figure 1 exemplarily shows a dynamic time division duplex communication environment according to an embodiment of the present invention.

As shown in FIG. 1, in a dynamic time division duplex communication environment according to an embodiment of the present invention, it has a configuration including a base station device 100 that determines resources for the terminal 200 within cell coverage (C). You can.

This base station device 100 utilizes SBFD (Subband non-overlapping Full Duplex) technology to match the pattern (TDD pattern) of resources allocated to the terminal 200 to the distance to the terminal 200 within cell coverage (C). Depending on your situation, you may decide differently.

Here, the SBFD technology is a technology being discussed in 3GPP Release 18. For example, as shown in FIG. 2, unlike the existing TDD method, simultaneous allocation of uplink (UL) resources and downlink (DL) resources between frequency subbands These possible slot formats can be supported.

As above, in the dynamic time division duplex communication environment according to an embodiment of the present invention, the time delay occurring during long-distance communication can be efficiently compensated through the above-described configuration. Hereinafter, the base station device 100 and the terminal for realizing this will be described. We will continue with a more detailed explanation of the composition of (200).

Figure 3 schematically shows the configuration of the base station device 100 according to an embodiment of the present invention.

As shown in FIG. 3, the base station device 100 according to an embodiment of the present invention may be configured to include a memory including instructions and a processor that executes the instructions in the memory.

In particular, in the case of a processor according to an embodiment of the present invention, it may have a configuration including a determination unit 110 and a decision unit 120 depending on the implemented function according to the execution of the instruction.

All or at least part of the configuration of the base station device 100 may be implemented in the form of a hardware module or a software module, or may be implemented in a combination of a hardware module and a software module.

Ultimately, the base station device 100 according to an embodiment of the present invention changes the resource pattern (TDD pattern) of the terminal 200 according to the distance to the terminal 200 within the cell coverage (C) through the above-described functional configuration. You can decide.

Below, we will continue with a more detailed explanation of the configuration of each function of the processor to realize this.

The determination unit 110 performs a function of determining the communication type of the terminal 200.

More specifically, the determination unit 110 determines the communication type according to the distance from the terminal 200 based on the TA (Timing Advance) value measured from the random access preamble of the terminal 200.

To this end, the determination unit 110 may receive a random access preamble through a specific RACH Occasion (RO) of the Random Access Channel (RACH).

This random access preamble may be received from the terminal 200 when the terminal 200 initially accesses a cell or enters an E1 event (Event E1), which will be described later.

Meanwhile, the initial access to a cell of the terminal 200 according to an embodiment of the present invention assumes a situation where the terminal 200 located at a distance makes initial access, considering the same maximum cell coverage (100 km) as the LTE communication system. .

In this way, in order to synchronize time with the terminal 200 located at a distance, the time delay for the random access preamble to reach the base station device 100 from the remote terminal 200 and the response of the base station device 100 thereto are determined by the terminal. The time delay to reach (200) must all be considered.

Therefore, in order to measure a long time delay corresponding to the size of the maximum cell coverage (100 km), it is necessary to secure continuous uplink (UL) resources of at least 3 ms.

For reference, this assumes that when using subcarrier spacing (SCS) 30kHz in the 3.5GHz band, 6 uplink (UL) resources must be allocated in a continuous section to secure a slot of at least 3ms.

Relatedly, in one embodiment of the present invention, a specific RO (RACH Occasion) of the Random Access Channel (RACH) selected to transmit the random access preamble when the terminal 200 initially accesses a remote cell is shown, for example, in Figure 4 (a) ), it can be set to 6 uplink resources allocated to consecutive sections within the slot.

In this way, RO (RACH Occasion), which is set with 6 uplink resources allocated to consecutive sections within the slot, is a random access preamble format that can secure the largest cell coverage according to the specifications of the 5G communication system. It can be set by Format = 1).

In summary, in order to secure the largest cell coverage when the terminal 200 initially accesses a remote cell, six uplink resources are allocated to continuous sections within the slot through the format of the random access preamble (Preamble Format = 1). A specific RO (RACH Occasion) for transmitting a random access preamble can be set using .

For reference, in one embodiment of the present invention, the use of six uplink resources allocated to a continuous section for setting RO (RACH Occasion) has been described as an example, but there is no special limitation on the number of these uplink resources. , can be set to an arbitrary number of 2 or more depending on operator settings considering the size of cell coverage.

Meanwhile, in one embodiment of the present invention, the short-distance access situation of the terminal 200 is also considered. To this end, a specific RO (RACH Occasion) of the RACH (Random Access Channel) is used, for example, as a single uplink as shown in FIG. 4 (b). Of course, it can be set as a default link resource.

For reference, considering the case of using SCS (subcarrier spacing) 30kHz in the 3.5GHz band, this single uplink resource can support measurement of time delay corresponding to a maximum cell coverage of 4.6km.

And, when a random access preamble is received through a specific RO (RACH Occasion) of a random access channel (RACH), the determination unit 110 determines a timing advance (TA) value (N _ta _Offset) measured from the received random access preamble. Based on the distance to the terminal 200, the communication type is determined.

At this time, the determination unit 110 uses the result of comparing the TA value (N _ta _Offset) with a predefined threshold (Timing Advance Thresh) to determine that the communication type according to the distance from the terminal 200 corresponds to the long-distance communication type. You can determine whether it is done or not.

That is, the determination unit 110 compares the TA value (N _ta _Offset) with a predefined threshold (Timing Advance Thresh), and if the TA value (N _ta _Offset) is greater than or equal to the threshold (Timing Advance Thresh), the communication type It can be determined as a long-distance communication type where the distance from the terminal 200 is long, and in the opposite case where the TA value (N _ta _Offset) is less than the threshold (Timing Advance Thresh), it is short-distance communication where the distance from the terminal 200 is relatively close. It can be determined by type.

For reference, the threshold here (Timing Advance Thresh) is an operator setting value according to the TS38.133 standard and can be set in the range, for example, from 0 to 25600.

The decision unit 120 performs a function of determining resources of the terminal 200 according to the determined communication type.

More specifically, when the communication type according to the distance to the terminal 200 is determined, the decision unit 120 determines the resource pattern (TDD pattern) of the terminal 200 differently according to the determined communication type.

At this time, when the long-distance communication type is determined by the communication type, the decision unit 120 can determine for the terminal 200 an uplink slot format (UL coverage slot format) in which uplink resources are allocated to continuous sections within the slot. there is.

In this regard, the decision unit 120 may consider the long-distance communication type and determine an uplink slot format that includes at least two uplink resources in a continuous section as shown in FIG. 5 (a), for example.

On the other hand, when the short-distance communication type is determined as the communication type, the decision unit 120 may determine a default slot format for the terminal 200.

This default slot format may have, for example, the format shown in Figure 5 (b), and in particular, this is TDD-UL-, which is an RRC IE used when setting TDD for a specific UE (UE Specific) in the 3GPP TS38.331 standard below. It can be determined based on the DL-ConfigDedicated parameter.

For reference, information about the slot format determined as the uplink slot format (UL Coverage slot format) or the default slot format according to the communication type is provided in the Random Access Preamble transmission (MSG1) where the random access preamble is received from the terminal 200. It is transmitted to the terminal 200 along with a TA value (N _ta _Offset) through Random Access Response reception (MSG2), which is a response, followed by Scheduled Transmission (MSG3), Contention resolution (MSG4), and Completion of the Random Access. The random access procedure can be completed through procedure (MSG5).

In relation to this, in the terminal 200 where this random access procedure has been completed, an E1 event (Event E1) related to the change in distance from the base station device 100 is generated based on the TA value (N _ta _Offset) received from the base station device 100. It periodically determines whether the E1 event is entering, and when determining the entry of an E1 event, a random access preamble is transmitted to the base station device 100 so that the base station device 100 can re-determine the slot format according to the distance change.

At this time, the terminal 200 detects a case where the result of adding or subtracting the hysteresis parameter to the TA value (N _ta _Offset) is outside the range of the threshold defined based on the TA value (N _ta _Offset). It can be determined that an E1 event has been entered.

A specific conditional expression for determining the entry of this E1 event can be defined as follows.

Meanwhile, in the case of a random access preamble transmitted when determining the entry of an E1 event at the terminal 200, based on the communication type determined in the previous random access procedure, in the case of long-distance communication, in the above-illustrated Figure 4 (a) As shown, it is transmitted to the base station device 100 through RO (RACH Occasion) set as a continuous uplink resource within the slot, and in the case of short-distance communication, it is transmitted as a single uplink resource as shown in FIG. 4 (b) previously illustrated. It can be transmitted to the base station device 100 through a set RO (RACH Occasion).

Figure 6 schematically shows the configuration of the terminal 200 according to an embodiment of the present invention.

As shown in FIG. 6, the terminal 200 according to an embodiment of the present invention may be configured to include a memory including instructions and a processor that executes the instructions in the memory.

In particular, the processor according to an embodiment of the present invention may have a configuration that includes an initial access unit 210 and an event processing unit 220, depending on the implemented function according to the execution of instructions.

All or at least part of the components of the terminal 200 may be implemented in the form of hardware modules, software modules, or a combination of hardware modules and software modules.

Ultimately, the terminal 200 according to an embodiment of the present invention determines the resource pattern (TDD pattern) of the terminal 200 differently depending on the distance from the base station device 100 in the cell coverage (C) through the above-described functional configuration. can support you.

The initial connection unit 210 is responsible for processing random accessors for initial connection.

More specifically, the initial access unit 210 transmits a random access preamble to the base station device according to a random access procedure for initial access, and matches the TA (Timing Advance) value measured from the random access preamble to the base station device. Depending on the communication type based on the distance to the base station device, resources within a slot format that can simultaneously allocate uplink resources and downlink resources between frequency subbands are determined.

This random access preamble may be received from the terminal 200 upon initial access to a cell or upon entering an E1 event (Event E1), which will be described later.

Meanwhile, cell initial access according to an embodiment of the present invention assumes a situation where a terminal 200 located at a distance makes initial access, considering the same maximum cell coverage (100 km) as the LTE communication system.

Relatedly, in one embodiment of the present invention, the specific RO (RACH Occasion) of the RACH (Random Access Channel) selected for transmission of the random access preamble upon initial access to a remote cell is shown in FIG. 4 (a), previously illustrating the specific RO (RACH Occasion) Likewise, it can be set to 6 uplink resources allocated to consecutive sections within the slot.

To summarize, in order to secure the largest cell coverage when initially accessing a remote cell, random access is performed using 6 uplink resources allocated to consecutive sections within the slot through the format of the random access preamble (Preamble Format = 1). A specific RO (RACH Occasion) for transmitting the preamble can be set.

Meanwhile, in one embodiment of the present invention, the short-distance access situation of the terminal 200 is also considered, and for this purpose, a specific RO (RACH Occasion) of the RACH (Random Access Channel) is used, as shown in FIG. 4 (b). Of course, it can be set as default as a single uplink resource.

In this regard, when a random access preamble is received through a specific RO (RACH Occasion) of a random access channel (RACH), the base station device 100 receives a timing advance (TA) value (N _ta _Offset) measured from the received random access preamble. ) Based on this, the communication type is determined according to the distance to the terminal 200.

At this time, the base station device 100 uses the result of comparing the TA value (N _ta _Offset) with a predefined threshold (Timing Advance Thresh) to determine that the communication type according to the distance from the terminal 200 corresponds to the long-distance communication type. You can determine whether it is done or not.

That is, the base station device 100 compares the TA value (N _ta _Offset) with a predefined threshold (Timing Advance Thresh), and if the TA value (N _ta _Offset) is greater than or equal to the threshold (Timing Advance Thresh), the communication type It can be determined as a long-distance communication type where the distance from the terminal 200 is long, and in the opposite case where the TA value (N _ta _Offset) is less than the threshold (Timing Advance Thresh), it is short-distance communication where the distance from the terminal 200 is relatively close. It can be determined by type.

Then, when the base station device 100 determines the communication type according to the distance to the terminal 200, the resource pattern (TDD pattern) of the terminal 200 is determined differently according to the determined communication type.

At this time, when the long-distance communication type is determined by the communication type, the base station device 100 can determine for the terminal 200 an uplink slot format (UL coverage slot format) in which uplink resources are allocated to continuous sections within the slot. there is.

In this regard, the base station device 100 may determine an uplink slot format that includes at least two uplink resources in a continuous section as shown in FIG. 5(a), taking into account the type of long-distance communication.

On the other hand, when the short-distance communication type is determined as the communication type, the base station device 100 may determine a default slot format for the terminal 200.

This default slot format may have the same format as shown in FIG. 5 (b), as illustrated above. In particular, this is the TDD- It can be determined based on the UL-DL-ConfigDedicated parameter.

The event processing unit 220 is responsible for processing the E1 event.

More specifically, when the random access procedure according to the initial connection is completed, the event processing unit 220 responds to the change in distance with the base station device 100 based on the TA value (N _ta _Offset) received from the base station device 100. It periodically determines whether an E1 event (Event E1) related to the event is entering, and when determining the entry of an E1 event, a random access preamble is transmitted to the base station device 100 to re-determine the slot format according to the distance change at the base station device 100. enable it to be performed.

At this time, the event processing unit 220 when the result of adding or subtracting the hysteresis parameter to the TA value (N _ta _Offset) is outside the range of the threshold defined based on the TA value (N _ta _Offset). can be determined to have entered the E1 event.

Meanwhile, in the case of the random access preamble transmitted when determining the entry of the E1 event, in the case of long-distance communication, continuous within the slot, as shown in FIG. 4 (a), based on the communication type determined in the previous random access procedure. It is transmitted to the base station device 100 through RO (RACH Occasion) set as an uplink resource, and in the case of short-distance communication, RO (RACH Occasion) set as one uplink resource as shown in FIG. 4 (b) above. It can be transmitted to the base station device 100 through .

As discussed above, according to the configuration of the base station device 100 and the terminal 200 according to an embodiment of the present invention, SBFD (Subband non-overlapping Full Duplex) in a dynamic time division duplexing environment By using technology, the resource pattern (TDD pattern) of the terminal 200 can be determined differently depending on the distance to the terminal 200 within the cell coverage, so cell coverage can be achieved by efficiently compensating for the time delay that occurs during long-distance communication. can be expanded.

In addition, according to the configuration of the base station device 100 and the terminal 200 according to an embodiment of the present invention, as SBFD (Subband non-overlapping Full Duplex) technology is utilized to expand cell coverage, the terminal using Half-Duplex Since it becomes possible for a specific terminal (200) to transmit downlink and a specific terminal to transmit uplink at the same time (200), the installation of a base station can be minimized by resolving the issue of uplink resource shortage depending on the purpose, and the frequency increase As simultaneous allocation of uplink and downlink resources between bands becomes possible, service quality can be improved by reducing latency. In particular, quality improvement is possible in real-time Voice IP services, which are a disadvantage of TDD.

In addition, according to the configuration of the base station device 100 and the terminal 200 according to an embodiment of the present invention, as the E1 event standard, which is a distance-based event, is reflected, the signal strength-based RSRP, RSRQ, and RSSI events are compared to the terminal. The effect of making it easier to check the distance can also be expected.

Hereinafter, a resource control method according to an embodiment of the present invention will be described with reference to FIG. 7.

For convenience of explanation, the following description will refer to the base station device 100 and the terminal 200 described with reference to FIG. 3 as the subjects performing the resource control method.

First, the base station device 100 determines the communication type according to the distance to the terminal based on the TA (Timing Advance) value measured from the random access preamble of the terminal 200 (S110).

To this end, the base station device 100 receives a random access preamble through a specific RO (RACH Occasion) of the RACH (Random Access Channel).

Relatedly, in one embodiment of the present invention, the specific RO (RACH Occasion) of the Random Access Channel (RACH) selected to transmit the random access preamble upon initial access to the remote cell of the terminal 200 is illustrated in FIG. 4. As in (a), it can be set to 6 uplink resources allocated to consecutive sections within the slot.

Then, when the base station device 100 receives a random access preamble through a specific RO (RACH Occasion) of the RACH (Random Access Channel), the TA (Timing Advance) value (N _ta _Offset) measured from the received random access preamble Based on this, the communication type is determined according to the distance to the terminal 200.

Furthermore, when the base station device 100 determines the communication type according to the distance to the terminal 200, it determines the resource pattern (TDD pattern) of the terminal 200 differently according to the determined communication type (S120-S140).

In this regard, the base station device 100 may consider the type of long-distance communication and determine an uplink slot format that includes at least two uplink resources in a continuous section as shown in FIG. 5 (a), for example.

This default slot format may have the same format as shown in FIG. 5(b), and in particular, this is TDD-UL-, which is an RRC IE used when setting TDD for a specific UE (UE Specific) in the 3GPP TS38.331 standard. It can be determined based on the DL-ConfigDedicated parameter.

Afterwards, the terminal 200, after completing this random access procedure, receives an E1 event (Event E1) related to the change in distance from the base station device 100 based on the TA value (N _ta _Offset) received from the base station device 100. Entry is periodically determined, and when the entry of an E1 event is determined, a random access preamble is transmitted to the base station device 100 so that the base station device 100 can re-determine the slot format according to distance changes (S150) .

The above-described process corresponding to steps S110 to S150 is repeated until the terminal 200 disconnects from the base station device 100 (S160).

As discussed above, according to the resource control method according to an embodiment of the present invention, a terminal (in cell coverage) is controlled by utilizing SBFD (Subband non-overlapping Full Duplex) technology in a Dynamic Time Division Duplexing environment. Since the resource pattern (TDD pattern) of the terminal 200 can be determined differently depending on the distance from the terminal 200, cell coverage can be expanded through a method of efficiently compensating for the time delay that occurs during long-distance communication.

In addition, according to the resource control method according to an embodiment of the present invention, as SBFD (Subband non-overlapping Full Duplex) technology is used to expand cell coverage, each terminal 200 using Half-Duplex is connected to a specific terminal 200 at the same time. Since it becomes possible to transmit downlink and specific terminals to transmit uplink, it is possible to minimize the installation of base stations by resolving the issue of uplink resource shortage depending on the purpose, and to minimize the installation of uplink and downlink resources between frequency subbands. As simultaneous allocation becomes possible, service quality can be improved by reducing latency. In particular, quality improvement is possible in real-time Voice IP services, which are a drawback of TDD.

In addition, according to the resource control method according to an embodiment of the present invention, as the E1 event standard, which is a distance-based event, is reflected, the effect of making it easier to check the distance to the terminal compared to signal strength-based RSRP, RSRQ, and RSSI events can be expected. You can.

The resource control method according to an embodiment of the present invention may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on the medium may be specially designed and constructed for the present invention or may be known and usable by those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes optical media (magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

Although the present invention has been described in detail with reference to preferred embodiments so far, the present invention is not limited to the above-described embodiments, and the technical field to which the present invention pertains without departing from the gist of the present invention as claimed in the following claims. Anyone skilled in the art will recognize that the technical idea of the present invention extends to the extent that various changes or modifications can be made.

Claims

memory containing instructions, and

By executing the command, the communication type is determined according to the distance to the terminal based on the TA (Timing Advance) value measured from the random access preamble of the terminal, and the uplink resources and downlink resources are used between frequency subbands. A base station device comprising a processor that determines resources within a slot format capable of simultaneous allocation of link resources according to the communication type.
According to claim 1,

The random access preamble is,

It is received through a specific RO (RACH Occasion) of RACH (Random Access Channel).

The specific RO is,

A base station device, characterized in that configuration is possible using two or more uplink resources allocated to consecutive sections within a slot, depending on the format of the random access preamble.
According to claim 1,

The processor,

A base station device characterized in that it determines whether the communication type is a long-distance communication type based on a result of comparing the TA value with a predefined threshold (Timing Advance Thresh).
According to claim 1,

The processor,

When the long-distance communication type is determined by the communication type, the base station device is characterized in that the slot format is determined to include two or more uplink resources allocated to consecutive sections within the slot.
According to claim 1,

The terminal is,

Based on the TA value confirmed from the base station device according to the random access procedure for initial connection, it is periodically determined whether an E1 event (Event E1) related to a change in distance from the base station device is entered, and the entry of the E1 event is performed. A base station device, characterized in that the random access preamble is transmitted to the base station device.
According to claim 5,

The terminal is,

A base station device characterized in that it determines entry of the E1 event when a result of adding or subtracting a hysteresis parameter to the TA value is outside the range of a threshold defined based on the TA value.
memory containing instructions; and

By executing the command, a random access preamble is transmitted to the base station device according to a random access procedure for initial access, and the base station device is based on a TA (Timing Advance) value measured from the random access preamble. Depending on the communication type according to the distance from the base station, if resources within a slot format capable of simultaneous allocation of uplink resources and downlink resources between frequency subbands are determined by the base station device, based on the TA value, the base station device A terminal comprising a processor that periodically determines whether an E1 event (Event E1) related to a change in distance is entered, and transmits the random access preamble to the base station device when the E1 event is determined to enter.
In the resource control method performed in the base station device,

A determination step of determining a communication type according to the distance from the terminal based on the TA (Timing Advance) value measured from the random access preamble of the terminal; and

A resource control method comprising a decision step of determining resources within a slot format capable of simultaneous allocation of uplink resources and downlink resources between frequency subbands according to the communication type.
According to claim 8,

The random access preamble is,

It is received through a specific RO (RACH Occasion) of RACH (Random Access Channel).

The specific RO is,

A resource control method, characterized in that configuration is possible using two or more uplink resources allocated to consecutive sections within a slot, depending on the format of the random access preamble.
According to claim 8,

The determination step is,

A resource control method characterized by determining whether the communication type is a long-distance communication type from the result of comparing the TA value with a predefined threshold (Timing Advance Thresh).
According to claim 8,

The decision step is,

When the long-distance communication type is determined by the communication type, a resource control method characterized in that the slot format is determined to include two or more uplink resources allocated to consecutive sections within the slot.
According to claim 8,

The terminal is,

Based on the TA value confirmed from the base station device according to the random access procedure for initial connection, it is periodically determined whether an E1 event (Event E1) related to a change in distance from the base station device is entered, and the entry of the E1 event is performed. A resource control method characterized by transmitting the random access preamble to the base station device.
According to claim 12,

The terminal is,

A resource control method characterized by determining entry of the E1 event when a result of adding or subtracting a hysteresis parameter to the TA value is outside the range of a threshold defined based on the TA value.
A computer-readable recording medium recording a program for executing the method of any one of claims 8 to 13.
A computer program coupled with hardware and stored on a medium for executing the method of any one of claims 8 to 13.